There certainly seem to have been big price drops on the SD1Merrill very recently, which suggests to me that something new is about to be announced.

My favourite "blue-chip" camera shop in the UK has just dropped the price of the SD1 Merrill with 17-50 f2.8 lens to £999.00 (UK Pounds) and £799.00 (UK pounds) for the camera body alone. The cheapest I could find the camera lens combination anywhere a couple of months ago was about £1600 (UK pounds) - and that was from a "grey importer" - but with most retailers charging over £2000 at that time.

Interestingly at least one retailer on Amazon is still selling the SD1 Merrill + lens for about £5000 (UK pounds). What a bizarre price difference!!